Muriel van RUYMBEKE, Roland BILLEN, Anne-Françoise CUTTING-DECELLE
Objects change over the time
Information is often incomplete, fuzzy
Crisp Fuzzy Crisp
Certain (c) Uncertain (u) (c) (u) (c) (u)
Intervals Instants Groups
Temporalities’ representations Level of certainty Temporalities’ natures
For intervals: 4 possibilities:
Crisp and certain: + 584 → + 628
Crisp and uncertain: maybe + 584 → + 628 fuzzy and certain: + 584 (+ 20 years) → + 628 fuzzy and uncertain: maybe + 584 (+ 20 years) → + 628 (+ 10 years)
For Instants: 2 possibilities: Crisp and certain: + 584
Objects change over the time
Information is often incomplete, fuzzy
and uncertain
Objects change over the time
Information is often incomplete, fuzzy
and uncertain
Data interpretation changes
Interpretation can be multiple and
State 1 State 3
State 2 State 4
Str.II Geometry
Archaeological information is complex; › uncertainty, chronology, contradictory
interpretations…
Specific archaeological models are needed as
well as efficient ways to deal with temporality ( 4D models)
CityGML can be used to express part of the
related urban semantic and 3D geometry
This way of managing information is also
relevant for urban applications dealing with complex spatio-temporal objects